Implementation of ISort for sorting by the date field in Entitys.
Properties
LastId
The lastId. This can be null for the initial page request. For subsequent pages, when sorting by date, lastId should be populated with the ID of the last record returned.
Offset
The offset. Used in paging to indicate where the last page left off, the value can be null for the first page then becomes the last known value of the "datetime" property for subsequent pages.